Minor tweaks, updated example project.

Author: Kyle Begeman

Example/ViewController.swift

@@ -19,7 +19,6 @@ class ViewController: UIViewController, InlineTagControllerDelegate {
 
         tagController.setConfiguration(CustomConfiguration())
         tagController.tagDelegate = self
-        tagController.setPlaceholderText(text: "Enter new tags...")
     }
 
     func inlineTagController(_ controller: InlineTagController, didFinishEditing text: String) {
@@ -33,8 +32,17 @@ class ViewController: UIViewController, InlineTagControllerDelegate {
 }
 
 class CustomConfiguration: InlineTagConfigurable {
-    var backgroundColor: ColorCollection = (view: UIColor.black, edit: UIColor.lightGray, invalid: UIColor.blue, placeholder: UIColor.green)
-    var radius: ValueCollection = (view: 4.0, edit: 0.0, invalid: 8.0)
+    var backgroundColor: ColorCollection = (view: UIColor.black, edit: UIColor.white, invalid: UIColor.blue, placeholder: UIColor.green)
+    var radius: ValueCollection = (view: 10.0, edit: 10.0, invalid: 10.0)
 
-    var cellHeight: Float = 12.0
+
+    var font: FontCollection {
+        let tagFont = UIFont.systemFont(ofSize: 14.0)
+        return (view: tagFont, edit: tagFont, invalid: tagFont, placeholder: tagFont)
+    }
+    
+    var cellHeight: Float = 20.0
+    var inset: UIEdgeInsets = UIEdgeInsets(top: 2.0, left: 2.0, bottom: 2.0, right: 2.0)
+
+    // Note: Any properties of 'InlineTagConfigurable' not implemented will use default values provided by the framework.
 }

InlineTagController.xcodeproj/xcuserdata/kyle.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist

@@ -3,35 +3,19 @@
    type = "1"
    version = "2.0">
    <Breakpoints>
-      <BreakpointProxy
-         BreakpointExtensionID = "Xcode.Breakpoint.FileBreakpoint">
-         <BreakpointContent
-            shouldBeEnabled = "Yes"
-            ignoreCount = "0"
-            continueAfterRunningActions = "No"
-            filePath = "Sources/InlineTagConfigurable.swift"
-            timestampString = "521576595.271164"
-            startingColumnNumber = "9223372036854775807"
-            endingColumnNumber = "9223372036854775807"
-            startingLineNumber = "80"
-            endingLineNumber = "80"
-            landmarkName = "set(config:)"
-            landmarkType = "7">
-         </BreakpointContent>
-      </BreakpointProxy>
       <BreakpointProxy
          BreakpointExtensionID = "Xcode.Breakpoint.FileBreakpoint">
          <BreakpointContent
             shouldBeEnabled = "Yes"
             ignoreCount = "0"
             continueAfterRunningActions = "No"
             filePath = "Sources/InlineTagController.swift"
-            timestampString = "521576607.517376"
+            timestampString = "521582474.518573"
             startingColumnNumber = "9223372036854775807"
             endingColumnNumber = "9223372036854775807"
-            startingLineNumber = "104"
-            endingLineNumber = "104"
-            landmarkName = "updateForConfig()"
+            startingLineNumber = "108"
+            endingLineNumber = "108"
+            landmarkName = "configure()"
             landmarkType = "7">
          </BreakpointContent>
       </BreakpointProxy>

Sources/InlineTagConfigurable.swift

@@ -9,6 +9,18 @@
 import Foundation
 import UIKit
 
+internal class Config {
+    static let instance = Config()
+    private init() {
+        configuration = DefaultConfiguration()
+    }
+
+    var configuration: InlineTagConfigurable
+    func set(config: InlineTagConfigurable) {
+        self.configuration = config
+    }
+}
+
 public typealias ColorCollection = (view: UIColor, edit: UIColor, invalid: UIColor, placeholder: UIColor?)
 public typealias FontCollection = (view: UIFont, edit: UIFont, invalid: UIFont, placeholder: UIFont)
 public typealias ValueCollection = (view: CGFloat, edit: CGFloat, invalid: CGFloat)
@@ -18,6 +30,9 @@ public enum NumberOfTags {
     case quantity(Int)
 }
 
+public class DefaultConfiguration: InlineTagConfigurable {}
+public let TagConfig = Config.instance.configuration
+
 public protocol InlineTagConfigurable {
     var backgroundColor: ColorCollection { get }
     var fontColor: ColorCollection { get }
@@ -34,6 +49,7 @@ public protocol InlineTagConfigurable {
     var autoCorrection: UITextAutocorrectionType { get }
     var skipOnWhitespace: Bool { get }
     var skipOnReturnKey: Bool { get }
+    var placeholderText: String { get }
     var numberOfTags: NumberOfTags { get }
     var itemValidation: Validation? { get }
 }
@@ -64,22 +80,7 @@ extension InlineTagConfigurable {
     public var autoCorrection: UITextAutocorrectionType { return .no }
     public var skipOnWhitespace: Bool { return true }
     public var skipOnReturnKey: Bool { return true }
+    public var placeholderText: String { return "Add tags..." }
     public var numberOfTags: NumberOfTags { return .unlimited }
     public var itemValidation: Validation? { return InlineTagControllerValidation.testEmptiness }
 }
-
-internal class Config {
-    static let instance = Config()
-    private init() {
-        configuration = DefaultConfiguration()
-    }
-
-    var configuration: InlineTagConfigurable
-
-    func set(config: InlineTagConfigurable) {
-        self.configuration = config
-    }
-}
-
-public class DefaultConfiguration: InlineTagConfigurable {}
-public let TagConfig = Config.instance.configuration

Sources/InlineTagController.swift

@@ -61,56 +61,55 @@ public class InlineTagController: UICollectionView {
     required public init?(coder aDecoder: NSCoder) {
         super.init(coder: aDecoder)
         self.collectionViewLayout = InlineTagControllerFlowLayout()
-        self.customInit()
+        self.commonInit()
     }
 
     override init(frame: CGRect, collectionViewLayout layout: UICollectionViewLayout) {
         super.init(frame: frame, collectionViewLayout: InlineTagControllerFlowLayout())
-        self.customInit()
+        self.commonInit()
     }
 
     override public var intrinsicContentSize: CGSize {
         let size = self.collectionViewLayout.collectionViewContentSize
         return CGSize(width: self.bounds.width, height: max(self.minimumHeight(), size.height))
     }
 
-    public func setConfiguration(_ config: InlineTagConfigurable) {
+    public func setConfiguration(_ config: InlineTagConfigurable = DefaultConfiguration()) {
         Config.instance.set(config: config)
-        updateForConfig()
+        configure()
     }
 
-    private func customInit() {
+    private func commonInit() {
         self.backgroundColor = UIColor.white
-        var frame = self.bounds
-        frame.size.height = minimumHeight()
-
-        placeholderLabel = UILabel(frame: frame.insetBy(dx: 20, dy: 0))
-        let view = UIView(frame: frame)
-        view.addSubview(self.placeholderLabel)
-
-        self.backgroundView = view
         self.register(InlineTagCell.self, forCellWithReuseIdentifier: InlineTagCell.identifier)
 
         self.dataSource = self
         self.delegate = self
 
         self.tapRecognizer = UITapGestureRecognizer(target: self, action: #selector(didTapOnView(_:)))
         self.addGestureRecognizer(self.tapRecognizer)
-
-        updateForConfig()
     }
 
-    private func updateForConfig() {
+    private func configure() {
+        var frame = self.bounds
+        frame.size.height = minimumHeight()
+
+        placeholderLabel = UILabel(frame: frame.insetBy(dx: 20, dy: 0))
+        placeholderLabel.font = TagConfig.font.placeholder
+        placeholderLabel.textColor = TagConfig.fontColor.placeholder
+        placeholderLabel.text = TagConfig.placeholderText
+
+        let view = UIView(frame: frame)
+        view.addSubview(placeholderLabel)
+        self.backgroundView = view
+
         sizingCell = InlineTagCell(frame: CGRect(x: 0, y: 0, width: 100, height: CGFloat(TagConfig.cellHeight)))
 
         if let layout = self.collectionViewLayout as? InlineTagControllerFlowLayout {
             layout.sectionInset = TagConfig.inset
             layout.minimumInteritemSpacing = TagConfig.interitemSpacing
             layout.minimumLineSpacing = TagConfig.lineSpacing
         }
-
-        self.placeholderLabel.font = TagConfig.font.placeholder
-        self.placeholderLabel.textColor = TagConfig.fontColor.placeholder
     }
 
     private func minimumHeight() -> CGFloat {
@@ -196,10 +195,6 @@ public class InlineTagController: UICollectionView {
         self.configure(with: tagItems)
     }
 
-    public func setPlaceholderText(text: String) {
-        self.placeholderLabel.text = text
-    }
-
 }
 
 // MARK: - Text manipulation